MaxScale 24.02.5 crashes with fatal signal 6 (std::length_error in maxbase::load_file<std::string>) on Ubuntu 24.04

2025-07-29 10:27:01   alert  : MaxScale 24.02.5 received fatal signal 6. Commit ID: e34da8aaa0ae1444f2bd0bdeabd10255c5faa0b5, System name: Linux, Release string: Ubuntu 24.04.2 LTS 24.04.2 LTS (Noble Numbat), Thread: MHD-single

2025-07-29 10:27:01   alert  : Last systemd watchdog notification was 26.2107s ago, notification interval is 30s.

2025-07-29 10:27:01   alert  : Statement currently being classified: none/unknown

2025-07-29 10:27:01   notice : For a more detailed stacktrace, install GDB.

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::dump_stacktrace(std::function<void (char const*)>)): ??:?

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::dump_stacktrace(void (*)(char const*))): ??:?

  /usr/bin/maxscale (sigfatal_handler(int)): server/core/gateway.cc:580

  /lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

  /lib/x86_64-linux-gnu/libc.so.6 (pthread_kill): ??:?

  /lib/x86_64-linux-gnu/libc.so.6 (gsignal): ??:?

  /lib/x86_64-linux-gnu/libc.so.6 (abort): ??:?

  /lib/x86_64-linux-gnu/libstdc++.so.6 (std::unexpected()): ??:?

  /lib/x86_64-linux-gnu/libstdc++.so.6 (std::rethrow_exception(std::__exception_ptr::exception_ptr)): ??:?

  /lib/x86_64-linux-gnu/libstdc++.so.6 (std::unexpected()): ??:?

  /lib/x86_64-linux-gnu/libstdc++.so.6 (__cxa_throw): ??:?

  /lib/x86_64-linux-gnu/libstdc++.so.6 (std::__throw_length_error(char const*)): ??:?

  /lib/x86_64-linux-gnu/libstdc++.so.6 (std::string::_M_replace_aux(unsigned long, unsigned long, unsigned long, char)): ??:?

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::pair<std::string, std::string > maxbase::load_file<std::string >(std::string const&)): maxutils/maxbase/include/maxbase/filesystem.hh:44

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::unordered_map<std::string, std::string, std::hash<std::string >, std::equal_to<std::string >, std::allocator<std::pair<std::string const, std::string > > >::operator[](std::string const&)): /usr/include/c++/13/bits/unordered_map.h:987

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (Client::handle(std::string const&, std::string const&, char const*, unsigned long*)): server/core/admin.cc:980 (discriminator 6)

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::string::_M_data() const): /usr/include/c++/13/bits/basic_string.h:223

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (call_connection_handler): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/connection.c:3070

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MHD_connection_handle_idle): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/connection.c:4522

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (call_handlers): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/daemon.c:1223

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MHD_epoll): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/daemon.c:5200

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MHD_polling_thread): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/daemon.c:5436

  /lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

  /lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

2025-07-29 10:27:03   notice : Attempting to dump stacktraces from all threads using internal profiler...

Thread 1

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (tgkill): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::collect_samples()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::stacktrace[abi:cxx11]()): ??:?

/usr/bin/maxscale (sigfatal_handler(int)): server/core/gateway.cc:599 (discriminator 1)

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_kill): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (gsignal): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (abort): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::unexpected()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::rethrow_exception(std::__exception_ptr::exception_ptr)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::unexpected()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (__cxa_throw): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::__throw_length_error(char const*)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::string::_M_replace_aux(unsigned long, unsigned long, unsigned long, char)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::pair<std::string, std::string > maxbase::load_file<std::string >(std::string const&)): maxutils/maxbase/include/maxbase/filesystem.hh:44

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::unordered_map<std::string, std::string, std::hash<std::string >, std::equal_to<std::string >, std::allocator<std::pair<std::string const, std::string > > >::operator[](std::string const&)): /usr/include/c++/13/bits/unordered_map.h:987

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (Client::handle(std::string const&, std::string const&, char const*, unsigned long*)): server/core/admin.cc:980 (discriminator 6)

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::string::_M_data() const): /usr/include/c++/13/bits/basic_string.h:223

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (call_connection_handler): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/connection.c:3070

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MHD_connection_handle_idle): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/connection.c:4522

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (call_handlers): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/daemon.c:1223

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MHD_epoll): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/daemon.c:5200

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (MHD_polling_thread): /home/timofey_turenko_mariadb_com/_build/libmicrohttpd/src/microhttpd/daemon.c:5436

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 2

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (DCB::DCB(int, sockaddr_storage const&, std::string const&, DCB::Role, MXS_SESSION*, DCBHandler*, DCB::Manager*)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (ClientDCB::ClientDCB(int, std::string const&, sockaddr_storage const&, DCB::Role, MXS_SESSION*, std::unique_ptr<maxscale::ClientConnection, std::default_delete<maxscale::ClientConnection> >, DCB::Manager*)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (ClientDCB::ClientDCB(int, std::string const&, sockaddr_storage const&, MXS_SESSION*, std::unique_ptr<maxscale::ClientConnection, std::default_delete<maxscale::ClientConnection> >, DCB::Manager*)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (ClientDCB::create(int, std::string const&, sockaddr_storage const&, MXS_SESSION*, std::unique_ptr<maxscale::ClientConnection, std::default_delete<maxscale::ClientConnection> >, DCB::Manager*)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Listener::accept_one_dcb(int, sockaddr_storage const*, char const*, maxscale::Listener::SharedData const&)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Listener::accept_connections()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Listener::handle_poll_events(maxbase::Worker*, unsigned int, maxbase::Pollable::Context)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::deliver_events(maxbase::Pollable*, unsigned int, maxbase::Pollable::Context)): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 3

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::ThreadPool::Thread::main()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 4

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_timedwait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::WatchdogNotifier::run()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 5

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (epoll_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 6

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (epoll_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 7

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::ThreadPool::Thread::main()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 8

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (epoll_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 9

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (epoll_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): ??:?

/usr/bin/maxscale (main): server/core/gateway.cc:2260

/lib/x86_64-linux-gnu/libc.so.6 (__libc_init_first): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main): ??:?

/usr/bin/maxscale (_start): ??:?

Thread 10

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::ThreadPool::Thread::main()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 11

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_clockwait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (std::cv_status std::condition_variable::__wait_until_impl<std::chrono::duration<long, std::ratio<1l, 1000000000l> > >(std::unique_lock<std::mutex>&, std::chrono::steady_clock::time_point const&)): /usr/include/c++/13/condition_variable:205

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 12

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_clockwait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (HttpSql::ConnectionManager::cleanup_thread_func()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 13

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (epoll_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::poll_waitevents()): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::Worker::run(maxbase::Semaphore*)): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

Thread 14

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxscale::Profiler::save_stacktrace()): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__sigaction): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__nptl_death_event): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_cond_wait): ??:?

/usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0 (maxbase::ThreadPool::Thread::main()): ??:?

/lib/x86_64-linux-gnu/libstdc++.so.6 (std::error_code::default_error_condition() const): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (pthread_condattr_setpshared): ??:?

/lib/x86_64-linux-gnu/libc.so.6 (__clone): ??:?

terminate called after throwing an instance of 'std::length_error'

  what():  basic_string::_M_replace_aux

MaxScale 24.02.5 received fatal signal 6. Commit ID: e34da8aaa0ae1444f2bd0bdeabd10255c5faa0b5, System name: Linux, Release string: Ubuntu 24.04.2 LTS 24.04.2 LTS (Noble Numbat), Thread: MHD-singleWriting core dump.